Closing ResourceResolver and Session

Technically you can do that but ideally, you should declare it globally for the service which can be used to complete a flow or a transaction and then make your master method to have the finally block to close the session or resourceresolver.

If you have multiple method which works independently, then you can still have the local variables

sankarr26533925 wrote...

Can I create resourceresolver in local method and close it ?

 

That's perfectly possible.

@sankarr26533925,

I don't think that could solve your problem. But you can try it. I think, at the job level, Open resourceResolver & close it, but make sure it is in a synchronized block.

Jitendra

Creating and closing ResourceResolver and Session in multiple methods can lead to potential performance issues, especially when used in high-frequency operations or with heavy resource-intensive tasks. However, it can also help in avoiding session contention issues like the one described. Below are recommendations to address your concerns and improve your implementation:

Key Recommendations

1. Reuse ResourceResolver and Session Where Possible:

   • If your operations are scoped to a single thread and have a consistent context, consider reusing the same ResourceResolver and Session across multiple methods within the same operation.

   • Use a higher-level object to manage and share these resources, such as a service or utility class.

2. Thread-Safe Practices:

   • Avoid sharing Session or ResourceResolver instances across threads.

   • Each thread should have its own instance to prevent concurrent access issues.

3. Batch Operations:

   • Instead of performing operations like adding, modifying, or deleting properties across 30 methods individually, batch these operations when possible. For example, collect changes and apply them in a single session save.

   • This reduces the overhead of repeatedly opening and closing sessions.

4. Exception Handling:

   • Ensure robust exception handling within your try-catch block to handle errors gracefully without leaving resources unclosed.

5. Performance Profiling:

   • Profile your application using tools like JProfiler or VisualVM to monitor session creation, thread contention, and other potential bottlenecks.

6. Centralized Resource Management:

   • Create a utility method or class to handle ResourceResolver and Session creation and closure, ensuring consistency and reducing code duplication.

Optimized Code Sample

Here’s an updated version of your code that incorporates these suggestions:

java

Copy code

public class ResourceHandler { private final ResourceResolverFactory resolverFactory; public ResourceHandler(ResourceResolverFactory resolverFactory) { this.resolverFactory = resolverFactory; } public void performOperations() { try (ResourceResolver resolver = resolverFactory.getServiceResourceResolver(null)) { Session session = resolver.adaptTo(Session.class); if (session != null) { try { Node test = session.getNode("/content/dam"); updateProperties(test); session.save(); } catch (Exception e) { // Log exception e.printStackTrace(); } } } catch (LoginException e) { // Log exception e.printStackTrace(); } } private void updateProperties(Node node) throws RepositoryException { // Perform your operations here } }

Explanation of Changes

1. Try-with-Resources:

   • Use try-with-resources for automatic closure of the ResourceResolver. It ensures proper cleanup of resources without needing explicit finally blocks.

2. Session Reuse:

   • The session is adapted from the ResourceResolver and is used within the same scope, ensuring no shared or stale sessions.

3. Utility Class:

   • Encapsulate the logic in a reusable handler class to promote better organization and reuse.